Blade precision forging forming method and blade

The invention discloses a blade precision forging forming method and a blade. The blade precision forging forming method comprises the following steps that S1, a finish forging forming die is designed according to M blade profile section coordinate parameters provided by a design drawing of blade parts; s2, a pre-forging forming die is designed according to parameters of a cavity of the finish-forging forming die; s3, according to parameters of cavities of the finish forging forming die and the pre-forging forming die, an extrusion blank making die is designed; and S4, the designed die is adopted, extrusion blank making, pre-forging forming and final forging forming of the bar are sequentially conducted, and a final forging piece is obtained. According to parameters of a blade part design drawing, the shapes and sizes of a final forge piece, a pre-forge piece and an extrusion blank are accurately designed, and a corresponding mold is designed for forming machining, so that in the forming process of a bar mate